弹性搜索复数邻近查询 [英] Elasticsearch complex proximity query

问题描述

鉴于我有一个如下所示的查询：


理事会* W / 5（提示或提示）


上述查询可以翻译为：查找任何具有议会* 和或提示）不超过5个字。

所以以下文字将匹配：

• Shellharbour City 理事会提示


• 理事会最佳提示


• 理事会前10名提示

但是不应该匹配：

• ... Shellharbour的城市理事会。没有任何好的提示。

我需要帮助来构建弹性搜索查询。我正在考虑正则表达式查询，但我不太清楚更好的选择。感谢

解决方案

您可以使用 span_near 查询，span_multi 和 span_or 。我们可以使用下面的查询来执行相同的搜索。

  {
query：{
 span_near：{
clauses：[
 {
span_multi：
 {
match：
 {
前缀：{text：委员会} 
} 
} 
}，
 {
span_or：{
子句 [
 {
span_term：{
text：{
value：tip
} 
} 
} ，
 {
span_term：{
text：{
value：tips
} 
} 
} 
] 
} 
} 
]，
slop：5，
in_order：true 
} 
} 
} 
  

要查找的重要内容是 span_term ，它是您搜索的文本。在这个例子中，我只有一个字段叫做文本。 Slop 表示我们将允许的词语数量，而 in_order 表示单词的顺序很重要。所以提议委员会将不匹配，理事会提示将在哪里。

Given that I have a query like below:

council* W/5 (tip OR tips)

The above query can be translated as: Find anything that has council* and (tip OR tips) no more than 5 words apart.

So following text will match:

• Shellharbour City Council Tip
• council best tip
• councils top 10 tips

But this one should not match:

• ... City Council at Shellharbour. There is not any good tip at all.

I need help to build an elasticsearch query for that. I was thinking about Regex query but I'm not quite sure about better alternatives. Thanks

解决方案

You can use a combination of the span_near query, span_multi and span_or. We can use the query below to perform the same search.

{
  "query": {
    "span_near": {
      "clauses": [
        {
          "span_multi":
          {
            "match":
            {
              "prefix": { "text": "council"}
            }
          }
        },
        {
          "span_or": {
            "clauses": [
              {
                "span_term": {
                  "text": {
                    "value": "tip"
                  }
                }
              },
              {
                "span_term": {
                  "text": {
                    "value": "tips"
                  }
                }
              }
            ]
          }
        }
      ],
      "slop": 5,
      "in_order": true
    }
  }
}

The important things to look out for are the span_term which is the text your searching for. In this example I only had one field called "text". Slop indicates the number of words we will allow between the terms, and in_order indicates that the order of words is important. So "tip council" will not match, where as "council tip" will.

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